Rolling-mill.



No. fifilAm. Patented Nov. 6. I900. J. FAWELL &. J. E. SCHWABQ ROLLINGMILL. (Application filed May 22, 1900.) (No Model.) 9 Sheets-Sheet 'l.

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Patented Nov. 6, I900,

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ROLLING MILL;

(Ayplication filed. May 22, 1900.)

9 Sheets-Sheet 4.

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F'IE'FL No. 156L470.

ROLLING MILL.

(Application filed May 22, 1900.)

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(Application filed May 22, 1900.) I Y (No Model.) 9 Shets-Sheet 6.

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(Application filed may 22, 1900.) (No Model.) 9 Sheets$haet 8.

WITNESSES: INVENTORS 'No. 661,470. Patentd Nov. 6, I900. J.-FAWELL & J.E. SCHWAB.

ROLLING MILL.

(Application filed May 22, 1900.

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tlnrrnn Frames PATENT Option.

JOSEPH FAl/VELL, OF PITTSBURG, AND JOSEPH E. SOHWAB, OF DUQUESNE,

PENNSYLVANIA. V

ROLLING-MILL.

SEEGIFIOATION forming part of Letters Patent No. 661,470, dated November6, 1900. Application filed May 22, 1900. Serial No. 17,696. (No model.)

To ctZZ whom it may concern.-

Be it known that we, JOSEPH Fawnnnof 312 Denniston avenue, Pittsburg,and JOSEPH E. SCHWAB, of Duquesne, in the county of Alle- 5 gheny andState of Pennsylvania, citizens of the United States, have invented ordiscovered certain new and useful Improvements in Rolling-Mills, ofwhich improvements the following is a specification.

The invention described herein relates to certain improvements inrolling-mills,and has for its object a construction and combination ofparts'whereby the changing of rolls involving the removal of one set andthe inser- I 5 tion of another set of rolls in the housings can befacilitated; and it is the further object of the invention to providefor the holding of the upper roll in contact with its adj usting-screwsor other adjusting devices. The invention is 20 hereinafter more fullydescribed and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a view, partly in section and partly in elevation,showingthe manner of changing rolls. Fig. 2 is a sectional elevation of a standof rolls havingroll-lifting cylinders applied thereto. Fig. 3 is an endelevation of the construction shown in Fig. 2. Fig. 4 is a sectionalelevation of a portion of a stand of rolls, illustrating a modificationof the lifting mechanism. Fig. 5 is an end elevation of the constructionshown in Fig. 4.. Fig. 6 is a sectional elevation of a roll-stand,showing our improvement adapted for rolling, changing, and for balancingthe upper roll. Figs. 7 and 8 show an end elevation and a top plan,respectively, of the construction shown in Fig. 6. Figs. 9 and 10 areend and sectional elevations of portions of a stand ofrolls,illustrating.a further modification of our improvement.

In the practice of our invention the housings 1 are constructed in theusual or any suitable manner known in the art and are provided withadjusting-screws 2, operated in any suitable manner, but preferably bymeans of a rack 3, inter-meshing with a pinion 4:, which is mounted upona vertical pin 5, supported by a bridge 6, secured to the oppositehousing. On the upper end of the pin 5 is secured a gear-wheel '7,inter-meshing with peripherally-toothed portions of sleeves 8,surrounding the stems of the screws 2. As shown in Figs. 2, 4, and 6,the stems of the screws and the sleeves are so constructed that thescrews are caused to rotate with the sleeves, while free to movelongitudinally through them. Any other suitable form or construction ofadjusting mechanism may be employed without departing from the spirit ofour invention, as hereinafter described.

On the housings are mounted fluid-pressure cylinders 10, provided withrams 11. In the construction shown in Figs. 2 and the rams are providedat their upper ends with heads 12, through which pass pins 13. Fromthese pins are suspended rods 14, preferably provided at their lowerends with hooks 15, adapted to engage sections of chains 16. The lowerends of these chains are connected to bridles consisting of side bars 17and a horizontal bar or bit 18. As shown in Figs. 2 and 3, the fluidpressure cylinders 10 are so mounted on the housings that the suspendingdevices connected thereto will hang immediately over the projectingjournals of the rolls.

In changing rolls the upper roll must first be removed from the housingand then the second roll, after which the new lower roll is placed inposition and then the upper roll. As shown in Fig. 1, we employ atransfer device consisting of a carriage 19, adapted to move along railsarranged in suitable relation to the roll-housings. This carriage isprovided with rails 20, which project beyond one end of the carriage adistance sufficient to permit of the rails being inserted through thewindow of one housing and their outer ends resting upon shoulders 21 inthe win dow of the other housing. On these rails is arranged atrolley-buggy 22, constructed to hold the body of the roll. The rails 20of this transfer device are arranged such a distance apart as to permitof the insertion of the rails in the manner described through thewindows of the housings of the rolls.

In changing rolls the rams of the fluid-pressure cylinders are loweredsufficiently far to permit the horizontal bar 18 being passed under thejournals of the upper rolls and into the side piecesl7. Theadjusting-screws are then raised and fluid-pressure is admitted to thecylinders to raise the upper roll to the upper ends of the windows ofthe housings. Supporting-pins 23 are then inserted through the housingsto engage the bearing-blocks of the upper roll and hold them in positionwhen the roll is removed. The carriage 19 is then run forward, the rails20 passing in through the window of one housing and into the window ofthe other housing, so that their outer ends will rest upon the shoulders21 of the second housing. The buggy 22 is then run forward onto therails into position below the upper roll, which is then lowered onto thebuggy. The suspending devices are then removed from the journals of theroll and the buggy, with the roll, moved out onto the carriage to suchposition as will permit of the roll being lifted by a suitable crane andcarried out of the way. The carriage 19 is then run out, and the bridlesof the lifting device are applied to the journals of the lower roll. Thelatter is then raised sufficiently far to permit the rails 20 and thebuggy 22 to be run into the housing and under the elevated roll. Thelatter is next lowered onto the buggy and drawn out from the housing andremoved by the crane. Another roll is then placed upon the buggy, runinto the housings, and elevating devices connected to the journals ofthis roll, which is then raised from the buggy. The carriage is againshifted, so as to permit this roll being lowered onto itsjournal-blocks. The lifting devices are then disconnected from thejournals, the carriage again shifted to proper position, a roll havingbeen previously placed upon the buggy. The lifting devices are nextconnected to the journals of this roll to raise it from the buggy,whereupon the carriage is withdrawn. The supporting-pins 23 are nextdrawn out to permit the bearing-blocks of the upper roll to drop ontothe journals of this roll, which is then lowered and the lifting devicesdisconnected.

As shown in Figs. 4 and 5, chains or ropes 16, having one end connectedto the liftingcylinder or some stationary part of the mill and passingover pulleys 24:, mounted on the upper ends of the rams and connected attheir lower ends to bridles or other suitable devices for engaging thenecks of the rolls, can be substituted for the bars and chains shown inFigs. 1 and 2.

As shown in Figs. 6, 7, and 8, a cross-head 25 may be supported upon theupper ends of the lifting-rams, said cross-head extending across fromhousing to housing and having openings therethrough, so as to permit thecross-head to move up and down along the adjusting-screws or theirprotecting-sleeves, but entirely out of contact therewith. To thecross-head are connected the bars 14 provided at their lower ends withhooks 15 to which are connected the chains 16. In addition to theconnections whereby the rolls may be lifted in the manner described whena change of rolls is desired rods 26 are connected to the cross-head 25,said rods extending, as shown, down through the housings alongside adjListing-screws and into the win dows. The lower ends of these rods 26are connected to cross bars or blocks 27 by any suitable detachablemeanssuch, for example, as the removable pins or keys 28. As shown inFigs. 6 and 7, the upper surfaces of the blocks 27 are made concave, soas to form seats for the journals of the rolls. This mechanism can beemployed by maintaining a constant pressure in the lifting-cylinders forholding the rolls up against the adjusting screws and can also be usedfor raising the upper roll to the upper ends of the housings when it isdesired to change the rolls. Ordinarily the roll-balancing connectionsto the fluid-pressure cylinders would be employed for lifting the upperrolls when it is desired to change the latter and the rods and chainsemployed for lifting the lower roll; but, as will be readily understood,these rods 26 may be made of sufficient length to extend down asufficient distance to be connected to the journal-blocks 29 of thelower roll. These journal-blocks are so constructed, as shown in Figs. 9and 10, as to permit of their being removed laterally froin thehousings. A convenient manner of connecting the blocks to the rods 26when the lower roll is to be raised consists in slotted lugs 30, on thejournalblocks 29, for the reception of the lower ends of the rods, towhich the blocks are detachably connected by pins or keys. It will beunderstood that the rods will be disconnected from the blocks 29, exceptwhen the lower roll is to be raised.

We claim herein as our invention 1. In a rolling-mill having incombination lifting mechanism independent of the roll-adjustingmechanism mounted on the roll-housing, and means for detachablyconnecting the lifting mechanism to both rolls, substantially assetforth.

2. A rolling-millhavingin combination lifting mechanism independentofthe roll-ad justing mechanism mounted on the roll-housing, a cross-headmovable by the lifting mechanism, and means for detachably connectingthe cross-head to the rolls, substantially as set forth.

3. A rollingmill having in combination fluidpressure cylinders mountedupon the housing, a cross-head connected to the rams or pistons of saidcylinders, rods extending down from the cross-head on opposite sides ofthe rolls, and means for detachably conmeeting the rolls to said rods,snbstantially as In testimony whereof we have hereunto set set forth. 7our hands.

4. Aroiling-nlill having in combination two A lifting-cylinders arrangedon the housings outside of and in, or approximately in line with theroll-adjusting screws, and means for Witnesses: detaehably connectingthe rams of the eylin- DARWIN S. VOLOOTT, ders with the rolls,substantially as set forth. M. S. MURPHY.

